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⚠️ '''Lapse risk''' is the risk that [[Definition:Policyholder | policyholders]] will discontinue, surrender, or fail to renew their insurance contracts at rates different from those assumed in an insurer's pricing and [[Definition:Reserve | reserving]] models. In the [[Definition:Life insurance | life insurance]] and [[Definition:Annuity | annuity]] sector, where products often span decades, deviations in lapse behavior can materially affect profitability, [[Definition:Reserve | reserve]] adequacy, and [[Definition:Solvency | solvency]] — either positively or negatively, depending on the product design and the direction of the deviation. Lapse risk is also relevant in [[Definition:Property and casualty insurance | property and casualty]] and [[Definition:Health insurance | health insurance]], where unexpected non-renewal patterns can erode portfolio quality and destabilize revenue projections.

⚙️ Insurers model expected lapse rates using historical experience, product characteristics, distribution channel data, and economic variables such as [[Definition:Interest rate risk | interest rates]] and unemployment levels. For a [[Definition:Universal life insurance | universal life]] policy carrying a [[Definition:Guaranteed minimum benefit | guaranteed minimum]] crediting rate, rising market interest rates tend to increase lapses as policyholders seek better returns elsewhere — a dynamic sometimes called "interest-sensitive lapse." Conversely, on products with in-the-money guarantees such as [[Definition:Variable annuity | variable annuities]] with [[Definition:Guaranteed living benefit | guaranteed living benefits]], policyholders lapse far less frequently than baseline assumptions might suggest, leaving the insurer exposed to guarantee costs longer than expected. Under [[Definition:Solvency II | Solvency II]], lapse risk is an explicit component of the life underwriting risk module, with prescribed stress tests for mass lapse, lapse-up, and lapse-down scenarios. The [[Definition:International Financial Reporting Standards (IFRS) | IFRS 17]] framework similarly requires insurers to incorporate realistic lapse assumptions into the [[Definition:Contractual service margin (CSM) | contractual service margin]] and to update those assumptions each reporting period.

💡 Getting lapse assumptions right is one of the most consequential actuarial judgments an insurer makes. Understating lapse rates on unprofitable or guarantee-heavy business means underestimating the cost of obligations that remain on the books; overstating them can cause an insurer to set insufficient [[Definition:Deferred acquisition cost (DAC) | deferred acquisition cost]] amortization periods or underprice products. The challenge is compounded by the behavioral nature of the risk: policyholder decisions are influenced by competitors' offerings, advisor incentives, tax law changes, and personal financial circumstances — factors that shift over time and resist precise quantification. For [[Definition:Rating agency | rating agencies]] and regulators worldwide, an insurer's demonstrated ability to model and manage lapse risk is a meaningful indicator of management quality and enterprise [[Definition:Risk management | risk management]] sophistication.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Policyholder behavior risk]]
* [[Definition:Surrender value]]
* [[Definition:Persistency]]
* [[Definition:Lapse rate]]
* [[Definition:Solvency II]]
* [[Definition:Reserve]]
{{Div col end}}

Definition:Lapse risk - Revision history

PlumBot: Bot: Creating new article from JSON